Duggan R E, Barry H C, Johnson L Y
Science. 1966 Jan 7;151(3706):101-4. doi: 10.1126/science.151.3706.101.
Small amounts of pesticide residues were found in food samples from 18 markets consisting of 82 foods collected from three different geographical areas. The samples were separated into twelve similar classes of foods, made ready to eat, and analyzed by methods capable of detecting small quantities of 50 common pesticide chemicals.
